;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2014, 2016 Ludovic Courtès <ludo@gnu.org> ;;; ;;; This file is part of GNU Guix. ;;; ;;; GNU Guix is free software; you can redistribute it and/or modify it ;;; under the terms of the GNU General Public License as published by ;;; the Free Software Foundation; either version 3 of the License, or (at ;;; your option) any later version. ;;; ;;; GNU Guix is distributed in the hope that it will be useful, but ;;; WITHOUT ANY WARRANTY; without even the implied warranty of ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;;; GNU General Public License for more details. ;;; ;;; You should have received a copy of the GNU General Public License ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. (define-module (build-self) #:use-module (gnu) #:use-module (guix) #:use-module (guix config) #:use-module (srfi srfi-1) #:use-module (srfi srfi-19) #:export (build)) ;;; Commentary: ;;; ;;; When loaded, this module returns a monadic procedure of at least one ;;; argument: the source tree to build. It returns a derivation that ;;; builds it. ;;; ;;; This file uses modules provided by the already-installed Guix. Those ;;; modules may be arbitrarily old compared to the version we want to ;;; build. Because of that, it must rely on the smallest set of features ;;; that are likely to be provided by the (guix) and (gnu) modules, and by ;;; Guile itself, forever and ever. ;;; ;;; Code: ;; The dependencies. Don't refer explicitly to the variables because they ;; could be renamed or shuffled around in modules over time. Conversely, ;; 'find-best-packages-by-name' is expected to always have the same semantics. (define libgcrypt (first (find-best-packages-by-name "libgcrypt" #f))) (define zlib (first (find-best-packages-by-name "zlib" #f))) (define gzip (first (find-best-packages-by-name "gzip" #f))) (define bzip2 (first (find-best-packages-by-name "bzip2" #f))) (define xz (first (find-best-packages-by-name "xz" #f))) (define guile-json (first (find-best-packages-by-name "guile-json" #f))) ;; The actual build procedure. (define (top-source-directory) "Return the name of the top-level directory of this source tree." (and=> (assoc-ref (current-source-location) 'filename) (lambda (file) (string-append (dirname file) "/..")))) (define (date-version-string) "Return the current date and hour in UTC timezone, for use as a poor person's version identifier." ;; XXX: Replace with a Git commit id. (date->string (current-date 0) "~Y~m~d.~H")) ;; The procedure below is our return value. (define* (build source #:key verbose? (version (date-version-string)) #:allow-other-keys #:rest rest) "Return a derivation that unpacks SOURCE into STORE and compiles Scheme files." ;; The '%xxxdir' variables were added to (guix config) in July 2016 so we ;; cannot assume that they are defined. Try to guess their value when ;; they're undefined (XXX: we get an incorrect guess when environment ;; variables such as 'NIX_STATE_DIR' are defined!). (define storedir (if (defined? '%storedir) %storedir %store-directory)) (define localstatedir (if (defined? '%localstatedir) %localstatedir (dirname %state-directory))) (define sysconfdir (if (defined? '%sysconfdir) %sysconfdir (dirname %config-directory))) (define sbindir (if (defined? '%sbindir) %sbindir (dirname %guix-register-program))) (define builder #~(begin (use-modules (guix build pull)) (let ((json (string-append #$guile-json "/share/guile/site/2.0"))) (set! %load-path (cons json %load-path)) (set! %load-compiled-path (cons json %load-compiled-path))) (build-guix #$output #$source #:system #$%system #:storedir #$storedir #:localstatedir #$localstatedir #:sysconfdir #$sysconfdir #:sbindir #$sbindir #:package-name #$%guix-package-name #:package-version #$version #:bug-report-address #$%guix-bug-report-address #:home-page-url #$%guix-home-page-url #:libgcrypt #$libgcrypt #:zlib #$zlib #:gzip #$gzip #:bzip2 #$bzip2 #:xz #$xz ;; XXX: This is not perfect, enabling VERBOSE? means ;; building a different derivation. #:debug-port (if #$verbose? (current-error-port) (%make-void-port "w"))))) (gexp->derivation "guix-latest" builder #:modules '((guix build pull) (guix build utils)) ;; Arrange so that our own (guix build …) modules are ;; used. #:module-path (list (top-source-directory)))) ;; This file is loaded by 'guix pull'; return it the build procedure. build ;; Local Variables: ;; eval: (put 'with-load-path 'scheme-indent-function 1) ;; End: ;;; build-self.scm ends here